In addition to this, sponges are currently too common in 1.12 and need to be scaled back substantially.

What mod authors are you refering to?

This issue was opened by @whichonespink44, as a reminder to himself, to fix an problem with code that he wrote himself.

Biomes O' Plenty is not in use; This is RTG by itself in a dev environment.

There's no point in adding additional screenshots, we know where the issue is.

Fixed in bf6cf8d